But leaving the flowers and traveling down the twigs to the branches and then down to the trunk, it all gets more generalized, until... until... no one really knows!
One could say statistics, but that is just another branch of mathematics, as is double entry bookkeeping.
One could say the lever, but it and the wheel are just another form of mechanical engineering.
One could say the astrolabe but it and sextants and telescopes are just an improvement in astronomy.
And so forth. I think the greatest contribution to mankind in the 20th century is penicillin or antibiotics, which has saved millions of people. But that is just a flower on the tree. And then I wonder, with 7 plus billion people on this planet, if that was such a good idea after all. :-/